Phenom Interview Questions, Process, and Tips

To find the path from the root to any node in a binary tree, perform a depth-first search and keep track of the path taken.

• Perform a depth-first search starting from the root node

• Keep track of the path taken using a stack or array

• When the target node is found, the path will be stored in the stack or array

Reverse a string using recursion

• Create a recursive function that takes a string as input

• Base case: if the string is empty, return an empty string

• Recursive case: return the last character of the string concatenated with the result of calling the function on the substring excluding the last character

Singleton is a design pattern that restricts the instantiation of a class to one object and provides a global point of access to that instance.

• Ensure private constructor to prevent instantiation of multiple objects.

• Provide a static method to access the single instance.

• Use a static variable to hold the single instance.

• Implement a private clone method to prevent cloning of the instance.

A CRM tool for HR's and Job Seekers with features like Profile Management, Job Application Tracking, Job Posting and Searching, Scalable Database Design, and Handling large database and latency.

• Implement user-friendly interface for profile management with options to update personal information, skills, and experience.

• Create a dashboard for job seekers to track their job applications, including status updates and interv...read more

Handling fault tolerance involves monitoring and logging with Prometheus, Grafana, and ELK, as well as implementing redundancy and failover mechanisms.

• Implement health checks to monitor the status of services and applications

• Set up alerts and notifications for abnormal behavior or failures

• Use Prometheus for metric collection and Grafana for visualization of data

• Utilize ELK stack for centralized logging and analysis of ...read more

Yes, Kubernetes can be used to manage n number of instances by defining the desired number in the deployment configuration.

• Define the desired number of instances in the 'replicas' field of the deployment configuration.

• For example, setting 'replicas: 3' will ensure that Kubernetes maintains 3 instances of the application running at all times.

• Kubernetes will automatically scale the number of instances up or down based on

The port number of sftp server is 22.

• The default port number for sftp server is 22.

• Port 22 is used for secure file transfer over SSH protocol.

• It is important to ensure that port 22 is open and accessible for sftp connections.

VPC stands for Virtual Private Cloud, a virtual network dedicated to a specific user in the cloud.

• VPC allows users to create isolated networks within the cloud environment.

• It provides control over network settings, such as IP address ranges, subnets, route tables, and network gateways.

• VPC helps in securing resources by defining security groups and network access control lists (ACLs).

LRU cache program is a data structure that stores the most recently used items.

• LRU cache is typically implemented using a doubly linked list and a hashmap.

• When a new item is accessed, it is moved to the front of the list.

• If the cache is full, the least recently used item is removed from the end of the list.

• Example: If the cache has a capacity of 3 and items A, B, C are accessed in that order, the cache will store C, B,...read more

DBMS locking is a mechanism to manage concurrent access to data in a database to prevent data corruption.

• Locking is used to ensure data integrity and consistency in a multi-user environment.

• Types of locks include shared locks, exclusive locks, and update locks.

• Example scenario: Two users trying to update the same record simultaneously - one user gets an exclusive lock while the other waits.

• Deadlocks can occur when two ...read more